Skip to main content
Your session has expired. Reloading...
Tumor Markers

CEA (Carcinoembryonic Antigen)

CEA is a broad tumor marker that, when included in a comprehensive health panel, contributes to a thorough baseline profile for performance-focused individuals.

Doctor's Assessment Included

What It Measures

CEA measures the blood concentration of carcinoembryonic antigen, a glycoprotein involved in cell adhesion during early foetal development. In healthy adults, CEA is present at very low levels. Elevated concentrations may reflect increased cellular activity in various tissues.

Why It Matters

CEA is widely used to monitor certain conditions over time and assess treatment response. Because CEA can be elevated by many benign factors — most notably smoking — a single raised result should always be reviewed in full clinical context.

When to Test

CEA testing is typically recommended by a healthcare provider rather than self-requested. Consult your healthcare provider before arranging this test independently.

Symptoms

Low Levels

Low or undetectable CEA levels are within the normal reference range and are not associated with specific symptoms.

High Levels

An elevated CEA does not itself cause symptoms. Important note: smoking can raise CEA significantly. Reference ranges differ for smokers and non-smokers.

Lifestyle Tips

Not smoking is the single most impactful lifestyle change for reducing CEA levels. A diet rich in vegetables, fruit, and whole grains — combined with regular physical activity and limited alcohol — supports overall colon health.

Frequently Asked Questions

Does an elevated CEA mean I have cancer?
No. CEA can be elevated by many benign conditions, including smoking, inflammatory bowel disease, and liver disease.
Why is there a different reference range for smokers?
Smoking stimulates CEA production and regularly causes levels to exceed the standard reference range for non-smokers.
Can CEA screen for colorectal cancer in healthy people?
No. CEA is not recommended as a population screening tool. Established colorectal screening programmes are the appropriate tools for this purpose.

Tests with related values

These panels measure values from the same category as this marker.